Bottle-making machine.



H, C. AYERST. BOTTLE MAKING MACHINE. APPLICATION FILED OCT. 29, 1914. H

Patented Jan. 18, 1916.

5 SHEETS-SHEET I.

WITNESSES.-

aM a! ry C.Ayerst H. C. AYEHST.

BOTTLE MAKING MACHINE.

APPLICATION FILED OCT. 29, 1914.

1 169,O6%, Patented Jan. 18, 1916.

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BOTTLE MAKING MACHINE.

APPLICATION FILED OCT. 29, 1914.

1,169,064., Patented Jan. 18, 1916 5 SHEETS-SHEEI 3.

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BOTTLE MAKING MACHINE.

APPLICATION FILED 00129. 1914.

1,169,064. Patehted Jan. 18, 1916.. 5 SHEETS-SHEET 4- Illll [11! V5 IV TOR 7 Harry C Ayerst H. C. AYERST.

BOTTLE MAKING MACHINE. APPLICATION FILED QCT.--29, 1914.

meww, Patented Jan. 18, 1916'.

5 SHEETS-SHEET 5.

Fig iOI 2o WITNESSES:

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HARRY C. AYERST, 0F SEATTLE, WASHINGTON, ASSIGNOR TO SANITARY PULP PRODUCTS COMPANY, OF SEATTLE, WASHINGTON, A CORPORATION OF WASHINGTON.

BOTTLE-MAKING MACHINE.

icence.

Specification of LettersPatent. Patented Jan. 18, ilglltio I Application filed October 29, 1914. Serial No. 869,243.

To all whom it may concern:

Be it known that I, HARRY C. AYEns'r, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Bottle-Making Machines, of which the following is a specification.

This invention relates to machines for the manufacture of bottles or other receptacles from pulpy material such as a mixture of macerated wood fiber and water. Its object is to produce an eflicient and economically operated machine ofthis character.

The invention consists in the novel con struction and combination of devices, as will be hereinafter; described and claimed.

In the accompanying drawings, Figure 1 is a front elevation of a portion of a machine embodying the present invention. Fig. 2 is a section taken substantially on line 2.2 of Fig. 1. Fig. 3 is a plan view with the feeding devices omitted. Fig. d is a sectional View taken substantially through 44: of Fig. 2. Fig. 5 is a front elevation of a series of cut-0H valves shown detached. Fig. 6 is a detail vertical section through one of the bottle molds and certain associated parts in the positions the same will occupy when the molding of a bottle is completed. Fig. 7 is a side elevation of the devices shown in Fig. 6 for filling the mold and forming the bottle mouth. Fig. 8 is a transverse vertical section of the pneumatic cylinder for controlling the operation of the devices illustrated in Fig. 7 Fig. 9 is a plan view shown partly in section, of the compressed air conduits and the valves which regulate the action of the inflatable molding core. Fig. 10 is a vertical section through l010 of Fig. .9. Figs. 11, 12 and 13 are sectional views showing the air regulating valve in different operative positions.

As illustrated, the molds are each comprised of two complementary members 5 and 5 having ears 6-through which extend horizontally disposed guide bars 7 which are supported by standards 8 of the machine frame. Said mold-members are each provided with horizontal socket elements 10 arranged in axial alinement with each other to receive stub elements 9 provided at opposite sides of vertically slotted blocks 11 which are disposed intermediate the adjacent molds as shown in Figs. 1 and 3. 12

represent keys fitted in holes provided in said stub elements and extending through slots 10 provided in the respective socket elements to aflord relative axial movements of such elements, but yieldingly held in their most extended positions by helical springs 13 which are interposed between the blocks 11 and the adjacent core-members.

Provided within the blocks 11 are bearing boxes 14 for the crank-pins 15 of transversely disposed crank shafts 15 which are journaled in bearings 16 of the frame. The cranks of the adjacent shafts 15 are directed oppositely in order to cause the complementary members of the various molds to be alternately brought together and separated. The crank shafts are rotated in unison by means of bevel tooth-gears 17 from a power driven shaft 18.

Provided for each mold is a hollow core member 19 formed of a flexible material, such as rubber, and depends from a pipe -20 which is connected. to a main pipe 21 leading from a source or reservoir of compressed air. As illustrated in Fig. 9, the pipes 20 and 21 are connected by branch pipes 22 and 23 and the casing 24: of a controlling valve 25. c

Included in the branch 22 is a pressurereducing valve'comprising a valve 26 which is yieldingly held against its seat and in opposition to the pressure'obtaining in the pipe 21 by means of a compression spring 27 acting between the valve proper and an adjustment screw 28. Ihe latter is adjusted to regulate the eflective power of the spring so that the air pressure beyondthe valve will be maintained at a relatively low pressure, say two pounds.

A controlling valve casing 24, as shown a passage 29 therein adapted to make comvalve, of the type conventionally called,

threeway, is of a cylindrical form with municative connection between the port 20 for the delivery pipe 20 and either of the branch ports 22 or 23 The controlling I valve 25 is also provided with a cavity 30 tending into the opening 24 whereby the air discharging therethrough may be'more or less throttled. The controlling valve may be rotated from the power shaft 18 by means of shafts 32, 32 and 32 and the coupling gears 34. Concentric with-the upright portion of a pipe 20 is a cylinder 35 extending into the upper end of a mold when .the same s closed and intermediate its height the chamber of each of thesei cylinders com numcates by a conduit '37 with a pump cylnder 36 (Figs. 2 and 4), the latter-being, in turn, connected by conduit 38 with a pipe 39' through which the pulp from which the bottles are made is supplied to the machine molds. The several pump cylinders are des1rab1y in axial alinement with, each other tooenable the pump pistons 40 and. 40 to be operated by a single rod 41. This rod is actuated to reciprocate said pistons through theinstrumentality of a vibratory lever 42 and a cam 43 which is mounted on the power shaft 18.

Gate valves 44 and 45 (see Figs. 4 and a 5) are provided in the conduits 37 and 38 to regulate the admission and discharge of the pulp to and from the respective-pump cylmders. To which end, such inlet and outlet valves are respectively connected to stems 44 and 45 and the latter are operatively connected by a lever 46 which is fulcrumed at 47 and engage studs 48 provided on said stems.

The gate valves, as illustrated "in Fig. 4, are operated ;by means of an arm 49 secured to' the piston-rod 41 and encountering spaced set collars 50 and 51 provided on one right cylinder 35. Operable within each of the cylinders 35 and inclosing the upright of said valve stems. The pump pistons 40' and40 and the respectivegate valves are dlsposed so that the pulp will be drawn into one of the pump cylinders simultaneously. w1th the expulsion of the pulp from the adjacent pump cylinder into the associated uppart of the pipe 20 therein, is an annular plunger 52 whose ofiice is to force a charge of pulp whlch has been pumped into a cvlinder 35 1nto the mold after the same is in closed condition. To accomplish which, a

plunger. 52 is provided with trunnions '53 for engagement with the forked arm of a molds.

lever 54 which is fulcrumed at 55 and has its other arm connected to the piston rod 56 of a piston 57 provided in a power cylinder.

I piece 62 which is connected to the trunnions 53 by links 62 -The latter are provided with slots 62 to afi'ord movement to a plunger during the early portions of its up-anddown strokes, independently of said coping piece, whereby the latter is brought down into the mouth of the mold subsequently to the mold being positively charged through the oflice of the plunger. After a bottlehas been formed, the plunger is first raised while the cop-ing-pieceremains in operative position and while the bottle material within a mold is subjected to air pressure which is exercised through the medium of the core.

The mold parts, as shown in Fig. 6, are

provided with perforations 65 for the escape ing the' inflating of the core so that the Wa- I ter received from the pulp in the receptacle will prevent the fibrous or granular components of the pulp from being forced through the mold perforations.

19 represents resilient fingers depending from a pipe 20. within the core 19 for yieldingly holding the latter in distended condition and alsoserving to cause the bottles to be slowly lowered upon a conveyer belt 68 subsequent to theopening of the respective The operation of the invention is as follows: The members 5 and 5 of the alternate molds are brought together and separated as before explained, through the instrumentah ity of the crank-shafts 15 and the blocks 11.

A pair of mold members are .thus brought together before the cranks of the'respective shafts have reached the extent of their travel and during the termination ofthe moldclosing strokes of the cranks, the springs 13 are compressed to maintain the referred to molds in closed condition. While this endures, the core is inflated under a relatively low air pressure, say two pounds, which is governed-by the controlling valve 25. when the same is in the position in which it is shown inFig. 11 for the flow of air through passage 29 from pipe branch 22, which leads from the pressure-regulating valve 26, to the pipe 20. With a core thus partially distend- Licence pulp received from a cylinder .36 through the conduit 37 and forced into the mold through .the agency of a plunger 35. A coping-piece 62 is then forced down into the upper end of the mold to furnish a form against which the mouth of the bottle is made. When a mold is thus charged and closed at its mouth by the said plunger and coping-piece the valve 25 is rotated into position in which it is illustrated in Fig. 12 for the admission of air under a relatively high pressure of, say, one hundred. pounds, from the pipe 21 and branch 23 to the inte rior of the core, resulting inthe further expansion of the core and subjecting the material in the mold. to a pressure which will cause the greater portion of the water to be driven from the material through the mold perforations 65 into the receptacle 66 to serve for the purpose explained. After the material has been sufliciently pressed, the valve 25 turns into the position in which shown in .Fig. 13, to present the exhaust cavity of the valve .to the port 20 where upon the air from the inside of the core escapes to the external atmosphere through opening 24 As the air escapes, the moldparts 5 and 5 are separating and when sulfiplurality of two-part molds, supporting and ciently far asunder to allow the bottle just formed to fall, the bottle will gradually drop upon the conveyer belt 68 to be carried thereby to a dry kiln. The discharge of air from the core, it is to be noted, is regulated by the screw 31 which serves as a valve. Should the air, hoyvever, discharge too rapidly, the power of the resilient fingers 19 asserts itself to prevent the rapid falling of a bottle.

What I claim as my invention, is.

1. In a machine of the class described, a

guiding means for the members of said molds, a slotted block interposed between the adjacent molds, a power-driven crank engaging in the slot of each such block, and

yielding connections between the moldmembers and the adjacent blocks whereby the mold members after being brought together are held in juxtaposition during a portion of the revoluble movements of the respective cranks.

2. In a machine of the class described, a plurality of two-part molds, power-actuated means interposed between the adjacent molds whereby the members of the alternate molds are successively drawn apart and brought together and yielding connections provided on said means whereby the mold members after being brought together are held for a time in juxtaposition without in terrupting the operation of said means.

3. In a machine of the class described,

a two-part mold, power-driven means for afiecting the movements of the members of said mold toward and from each other,

means associated with the aforesaid means to retain said mold in closed condition during a portion of the time the first-named .means is tending to move the mold memmeans for forming the mouth of a bottle being pressed within said mold.

5. In a machine of the classdescribed, a

mold comprising a pair of perforated moldmembers, means to reciprocate said members to and from juxtaposed positions, a hollow core formed of an expansible material, and means to supply a predetermined quantity of hydrated. bottle-making material into the space surrounding and below the bottom of the core in the nold, of means to inflate said core to primarily afford suitable space to accommodate material to make'an entire bottle and to ultimately exercise sufiicient pressure against said material to expel the water from said material through the perforations of the mold.

6. In a machine of theaclass described, the combination with a perforated separable mold, a water receptacle provided exteriorly of each mold member and communicating with the interior of the mold through the perforations thereof, an inflatable core for said mold, means to supply a mixture of pulp and water around the core when the mold is closed thereabout, of means to supply a fluid under pressure within the core to expel water from the pulp through the perforations of said mold into the respective receptacles, said last-named means also serving to release the air from the core whereby the'bottle formed in said mold is lowered by the deflating of the core subsequent to the separation of the mold members.

7. In a machine of the class described, an expansible core, a tubular support for said core, a plurality of resilient fingers depending from said support within the core, and means for supplying air into the core at various pressures to inflate the core for the purposes specified.

8. In a machine of the class described, the combination with a core, and a mold composed of members arranged for movements relative to each other and to the core, of means for supplying material to be formed I 'ford an entire bottle from such charge, and

in said mold, said means including a pump having intake and discharge passages, valves for said passages, and a pump pldnger adapted in coiiperation With said valves, to draw a charge of said material into the pulilip and thence deliver the same to the mo meepee HARRY G. AYERST.

' Witnesses:

.HORAQE BARNES, PIERRE BARNES. 

